<template>
    <div>
        <div
            style="
                width: 600px;
                background: #fff;
                margin: 50px auto;
                padding: 30px 60px;
            "
        >
            <h1 style="text-align: center; margin: 20px 0">管理员登录</h1>
            <el-form
                :model="ruleForm"
                :rules="rules"
                ref="ruleForm"
                label-width="100px"
                class="demo-ruleForm"
            >
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="ruleForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="ruleForm.password"></el-input>
                </el-form-item>
                <el-form-item>
                    <el-button type="primary" @click="submitForm('ruleForm')"
                        >登录</el-button
                    >
                    <el-button @click="resetForm('ruleForm')">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
export default {
    data() {
        return {
            ruleForm: {
                username: "root",
                password: "123456",
            },
            rules: {
                username: [
                    {
                        required: true,
                        message: "请输入用户名",
                        trigger: "blur",
                    },
                    {
                        min: 4,
                        max: 15,
                        message: "长度在 4 到 15 个字符",
                        trigger: "blur",
                    },
                ],
                password: [
                    { required: true, message: "请输入密码", trigger: "blur" },
                    {
                        min: 4,
                        max: 15,
                        message: "长度在 4 到 15 个字符",
                        trigger: "blur",
                    },
                ],
            },
        };
    },
    methods: {
        submitForm(formName) {
            this.$refs[formName].validate((valid) => {
                if (valid) {
                    let url = "http://localhost:9081/admins/login";
                    console.log("url = " + url);
                    let formData = this.qs.stringify(this.ruleForm);
                    this.axios.post(url, formData).then((response) => {
                        let responseBody = response.data;
                        if (responseBody.state == 20000) {
                            this.$message({
                                message: "登录成功！",
                                type: "success",
                            });
                            // 获取服务器端响应的JWT，并存储到LocalStorage
                            let jwt = responseBody.data;
                            console.log("登录成功，服务器响应的JWT=" + jwt);
                            localStorage.setItem("jwt", jwt);
                            this.$router.push("/sys-admin/index");
                            // 以下是测试
                            // let localJwt = localStorage.getItem('jwt');
                            // console.log('从LocalStorage中读取JWT：' + localJwt);
                        } else {
                            this.$message.error(responseBody.message);
                        }
                    });
                } else {
                    console.log("error submit!!");
                    return false;
                }
            });
        },
        resetForm(formName) {
            this.$refs[formName].resetFields();
        },
    },
};
</script>

<style>
body {
    background: #12487d;
}
</style>